[mutter] Fix typo

[Adel Gadllah <agadllah src gnome org>]

commit ada8882b61351d15daf1fbca7f425c22bac58ded
Author: Adel Gadllah <adel gadllah gmail com>
Date:   Mon Aug 29 23:17:22 2011 +0200

    Fix typo

 src/compositor/meta-window-actor.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/compositor/meta-window-actor.c b/src/compositor/meta-window-actor.c
index 11bd6ab..e952eda 100644
--- a/src/compositor/meta-window-actor.c
+++ b/src/compositor/meta-window-actor.c
@@ -2288,7 +2288,7 @@ meta_window_actor_pre_paint (MetaWindowActor *self)
       return;
     }
 
-  if (priv->received_damage && !self->unredirected)
+  if (priv->received_damage && !self->priv->unredirected)
     {
       meta_error_trap_push (display);
       XDamageSubtract (xdisplay, priv->damage, None, None);